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Arenaviruses are important causes of viral hemorrhagic fevers in humans. Arenavirus infection of cells occurs via a pH-dependent endocytic route, but detailed studies of entry pathways have not been done. We investigated the role of cell membrane cholesterol, caveolae, and clathrin coated pits in infection by Lassa virus (LASV), which utilizes alpha-dystroglycan (α-DG) as a receptor, and Pichindé...
The new world arenavirus Pichinde (PIC) is the basis of an accepted small animal model for human Lassa fever. PIC (Munchique strain) variant P2 is attenuated in guinea pigs, whereas variant P18 is extremely virulent. Previous sequence analysis of the S segments of these two viruses indicated a small number of possible virulence markers in the glycoprotein precursor (GPC) and nucleoprotein (NP) genes...
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